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Disclosures about Fair Value of Assets and Liabilities - Qualitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements, Other than Goodwill (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) consecutive_Payment | Dec. 31, 2019 USD ($) consecutive_Payment
Measurement Input, Discount Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.10 |
Significant Unobservable Inputs (Level 3) | Mortgage servicing rights |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Fair Value | $ | $ 12,472 | $ 14,327
Valuation Technique | Discounted cash flows | Discounted cash flows
Unobservable Inputs | Discount rate, Constant prepayment rate, Probability of default | Discount rate, Constant prepayment rate, Probability of default
Significant Unobservable Inputs (Level 3) | Collateral dependent loans |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Fair Value | $ | $ 13,123 | $ 6,806
Valuation Technique | Collateral based measurement | Collateral based measurement
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions and ultimate collectability
Minimum | Significant Unobservable Inputs (Level 3) | Collateral dependent loans |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Discount to reflect current market conditions and ultimate collectability | 0.00% | 0.00%
Minimum | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Discount Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.078 | 0.087
Minimum | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Constant Prepayment Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.115 | 0.102
Minimum | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Default Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.000 | 0.001
Maximum | Significant Unobservable Inputs (Level 3) | Collateral dependent loans |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Discount to reflect current market conditions and ultimate collectability | 72.00% | 100.00%
Maximum | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Discount Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.078 | 0.090
Maximum | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Constant Prepayment Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.209 | 0.198
Maximum | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Default Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.010 | 0.029
Weighted Average | Significant Unobservable Inputs (Level 3) | Collateral dependent loans |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Discount to reflect current market conditions and ultimate collectability | 12.40% | 7.40%
Weighted Average | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Discount Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.078 | 0.087
Weighted Average | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Constant Prepayment Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.175 | 0.122
Weighted Average | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights | Measurement Input, Default Rate |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Unobservable Inputs | 0.008 | 0.007

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- Definition Discount to reflect current market conditions and ultimate collectability. + References No definition available. + Details
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